Re: Vector problem

*To*: mathgroup at smc.vnet.net*Subject*: [mg115923] Re: Vector problem*From*: DrMajorBob <btreat1 at austin.rr.com>*Date*: Wed, 26 Jan 2011 05:04:15 -0500 (EST)

Projections onto what planes, and how are those planes specified? Bobby On Tue, 25 Jan 2011 03:19:45 -0600, Mark Perrin <m.perrin at me.com> wrote: > I'm having trouble formulating a problem in Mathematica. > > If I have two 2D vectors, u and v that are the known projections of a > third unknown 2D vector z, how do I determine z? > > My word problem (I think) is find the solution to: Projection[z,u] == u > && Projection [z,v] == v > > Any help in starting this problem would be much appreciated. > > -- DrMajorBob at yahoo.com